Zoological Society. 223 



solidd, striatuld, vix nitidd, fusco- earned ; spird vix elatd ; an- 

 fractibus 4± planiusculis , ultimo depresso, subangulato ; aperturd 

 obliqud, semiovali, altiore quam latd ; columella brevi, bast antror- 

 sum dentatd, callum albidum, semicircularem retrorsum emittente ; 

 peristomate recto, subincrassato, juxta dentem columella? non 

 emarginato. 



Diam. 7^, altit. 4 mill. 



From the island of Cuba. 



20. Helicina Oweniana, Pfr. Hel. testd conicd, tenui, l&vigatd, 

 sub lente lineolis impressis, antrorsum obliquis subtilissime sculptd, 

 nitidd, pellucidd, stramined, sursum saturatiore ; spird conicd, 

 vertice obtusiusculo , castaneo ; suturd lineari, albo-marginatd ; 

 anfractibus 6 planis, ultimo basi planiusculo ; aperturd subobliqud, 

 semiovali ; columelld brevi, verticaliter rimatd, callum tenuissimum 

 retrorsum emittente; peristomate aurantiaco, angulatim patente, 

 refiexiusculo, margine utroque levissime curvato. 



Diam. 9, altit. 1\ mill. 



From Chiapas, Mexico (Ghiesbreght). 



21. Helicina plicatula, Pfr. Hel. testd depresse conoided, soli- 

 duld, oblique regulariter et elegantissime plicatd, nitidd, corned ; 

 spird brevi, conoided, acutiusculd ; anfractibus fere 5 convexius- 

 culis, ultimo superne impresso, peripherid obsoletissime angulato ; 

 aperturd obliqud, semilunari ; columelld brevissimd, simplice, in 

 callum tenuissimum diffusd; peristomate subincrassato y cameo, 

 margine supero sinuato, basali juxta columellam subdentato. 



Diam. 5, altit. 3 mill. 



From the island of Martinique. 



22. Helicina Reeveana, Pfr. Hel. testd conicd, soliduld, striis 

 incrementi distinctis et lineolis obliquis impressis confertissimis sub 

 lente clathratuld, nitiduld, albidd, rufo nebulosd et tamiatd ; spird 

 elevatd, acutiusculd ; suturd impressd ; anfractibus 6 convexius- 

 culis, ultimo angulato, basi vix convexiore ; aperturd subsemiovali, 

 intus castaned; columelld brevissimd, horizontaliter in callum 

 parvulum, album, expansd ; peristomate albo, angulatim patente, 

 margine basali leviter arcuato, cum columelld extus subangulatim 



juncto. 

 Diam. 8£, altit. 6 mill. 

 From Cuba. 



23. Helicina Rohri, Pfr. Hel. testd conoided, crassd, striatuld 

 et submalleatd, opacd, vix nitiduld, stramineo-albidd vel purpured, 

 albo-fasciatd ; spird conoided, acutiusculd; anfractibus 4^ — 5 

 planiusculis, ultimo superne turgido, ad peripheriam carind acutd, 

 compressd, prominente munito, antice deflexo, basi vix convexo ; 

 aperturd obliqud, parvuld, semiovali, altiore quam latd ; columelld 

 subsimplice, basi obsolete tuberculatd, callum semicircularem album 

 retrorsum emittente ; peristomate recto, acuto, intus crasse albo- 

 labiato, margine supero emarginato. 



Diam. 10, altit. 7 mill. 



From the Marquesas Islands (Rohr). 



